Degradable material degradation test equipment and method based on environmental simulation

Abstract

The invention discloses degradable material degradation testing equipment and method based on environment simulation, and relates to the technical field of degradable material degradation testing, and the degradable material degradation testing equipment comprises an environment simulator, a degradation process monitoring unit, a chip-based environment simulation control module and an environment simulation analysis module. According to the invention, independent environment simulation elements are installed in a plurality of independent test cavities in a matched manner, and a plurality of visual cameras of the degradation process monitoring unit can independently shoot visual pictures of a plurality of degradable material test pieces in the test process; the environment simulation analysis module can analyze the degradation process of the degradable material test piece on the basis of the environment simulation parameters and the visual picture, and finally a degradation test result based on environment simulation is obtained through visual analysis. The equipment does not need to be started within dozens of days, and the test result can more accurately reflect various indexes of the degradable material.

Description

Technical Field

[0001] The invention relates to the technical field of degradation testing of degradable materials, and in particular to a degradation testing device and method for degradable materials based on environmental simulation. Background Art

[0002] The existing degradation testing technology for degradable materials mainly includes several different methods. According to research from East China Normal University, there are currently four main methods for testing material degradation rates. These methods include two standard methods (using mature compost and vermiculite mature compost extracts as inoculants) and two experimental methods (using vermiculite Bacillus and vermiculite thermophiles as inoculants). These methods were used to test the degradation properties of different materials, such as base paper, plastic film (mainly composed of polylactic acid, PLA) and finished tapes. The study found that within a 60-day experimental period, base paper and PLA film showed rapid degradation under the four methods, but the degradation rate of the finished tape was different under different methods.

[0003] On the other hand, according to a review on the X-MOL website, biodegradable polymers are of great significance in terms of environmental protection because they can reduce environmental pollution caused by traditional polymer composites. However, these materials also have some disadvantages, such as they may not be highly degraded under certain environmental conditions, or they may be expensive to produce. These disadvantages limit their application in certain fields. Nevertheless, research and development of biodegradable polymers continues with the aim of improving their performance and reducing their costs to better meet market demands.

[0004] In general, although the existing biodegradable material degradation test technology can evaluate the biodegradability of materials to a certain extent, it still has some defects, such as the standardization of test methods, the variability of degradation rates, and the instability of material properties under specific conditions. Solving these problems is crucial to promoting the development and widespread application of biodegradable materials. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a degradation test device and method for degradable materials based on environmental simulation. The following technical solutions are adopted:

[0006] A degradation test device for degradable materials based on environmental simulation comprises an environmental simulator, a degradation process monitoring unit, a chip-based environmental simulation control module and an environmental simulation analysis module. The environmental simulator comprises a test piece bearing platform, a lifting mechanism, a test cover assembly and multiple sets of environmental simulation elements. The bottom of the test piece bearing platform is detachably mounted in a test equipment box, and a plurality of test slots are arranged on the top. The fixing seat of the lifting mechanism is detachably mounted on the inner wall of the test equipment box, and the piston rod is downwardly facing the center of the test piece bearing platform. The upper part of the test cover assembly is connected and mounted on the piston rod of the lifting mechanism. When the piston rod of the lifting mechanism is in a descending state, the bottom of the test cover assembly is buckled on the top surface of the test piece bearing platform to lower the test piece bearing platform. A plurality of test slots are sealed and divided into a plurality of independent test cavities, a plurality of groups of environmental simulation elements are respectively installed on the inner walls of the plurality of test cavities for simulating light and temperature and humidity environments, a plurality of visual shooting cavities are arranged inside the test piece carrying platform and the test cover assembly, a plurality of visual cameras of the degradation process monitoring unit are respectively installed in the plurality of visual shooting cavities for shooting visual images of the test process of the degradable material test piece and transmitting the images to the environmental simulation analysis module, the environmental simulation control module respectively controls the execution actions of the environmental simulator and the actuators of the degradation process monitoring unit, the environmental simulation analysis module is respectively communicated with the degradation process monitoring unit and the chip-based environmental simulation control module, and the degradation process of the degradable material test piece is analyzed based on the environmental simulation parameters and the visual images.

[0007] By adopting the above technical scheme, in order to realize diversified environmental simulation tests on degradable materials, a test cover assembly that can be opened and closed driven by a lifting mechanism and multiple test slots of a test piece carrying platform are sealed and divided into multiple independent test chambers in the same equipment. Multiple independent test chambers are equipped with separate environmental simulation components. The environmental simulation components can realize the simulation of temperature, humidity and light. The simulation parameters can be controlled by the environmental simulation control module, and can also be programmed to realize automatic simulation parameter setting. The multiple visual cameras of the degradation process monitoring unit can independently shoot the visual images of the test process of multiple degradable material test pieces. The environmental simulation analysis module can analyze the degradation process of the degradable material test pieces based on the environmental simulation parameters and the visual images. The analysis adopts visual analysis, which mainly analyzes the degradation-related characteristics of the material including parameters such as color change, morphological change and texture change. Finally, the degradation test results based on environmental simulation are obtained through visual analysis. Unless the staff learns that an abnormality occurs through the visual images during the detection process, they do not need to open the equipment for up to dozens of days, and can complete the degradation test of degradable materials more efficiently. The test results can more accurately reflect the various indicators of degradable materials.

[0008] Optionally, at least two spring columns are provided in each test slot on the top of the test piece carrying platform, and the bottom surface of the test cover assembly is provided with the same number of spring columns corresponding to the position of each test slot on the test piece carrying platform. When the bottom of the test cover assembly is buckled on the top surface of the test piece carrying platform, the spring columns press the degradable material test piece into position.

[0009] By adopting the above technical solution, at least two spring columns are provided in each test slot on the top of the test piece carrying platform, and generally three spring columns are used, and the same number of spring columns are arranged at corresponding positions on the bottom surface of the test cover assembly. In this way, when the bottom of the test cover assembly is buckled on the top surface of the test piece carrying platform, the three groups of spring columns will press the front, middle and rear parts of the upper and lower surfaces of the degradable material test piece, thereby adapting to the testing of hard or soft degradable materials of different sizes.

[0010] Optionally, the environmental simulation element includes a temperature environment control module, a humidity environment control module and a lighting environment control module, the temperature environment control module includes a semiconductor temperature controller and a heat conduction plate, the semiconductor refrigeration plate of the semiconductor temperature controller is installed in the electrical appliance slot opened at the bottom of the test cover assembly, one side of the heat conduction plate is mounted on the surface of the semiconductor refrigeration plate, and the other side is in contact with the environment in the test chamber, and the temperature parameter control of the semiconductor temperature controller is used to control the ambient temperature in the test chamber. The humidity environment control module includes a humidifying atomizer, a moisture input pipe, a moisture output pipe, a micro-circulation pump and a humidity controller based on a humidity sensor, the humidifying atomizer is installed on the top of the test cover assembly, and the moisture output end of the humidifying atomizer is connected to the moisture input pipe. The moisture output pipeline is connected with the test cavity, the moisture output pipeline is buried in the test cover assembly, the micro-circulation pump is installed on the top of the test cover assembly, the suction port of the micro-circulation pump sucks moisture in the test cavity through the moisture output pipeline, the humidity controller measures the humidity value in the test cavity based on the set humidity value and the humidity sensor, and respectively controls the execution actions of the humidifying atomizer and the micro-circulation pump to control the humidity in the test cavity, the lighting environment control module includes two sunlight simulation lamps and a lighting controller, the two sunlight simulation lamps are respectively installed in the middle of the test slot of the test piece bearing platform and at the corresponding positions at the bottom of the test cover assembly, and are used to irradiate the upper and lower surfaces of the degradable material test piece, and the lighting controller respectively controls the on and off and operating power of the two sunlight simulation lamps.

[0011] By adopting the above technical scheme, in order to realize the environmental simulation of temperature, humidity and light, the environmental simulation element adopts the combination of temperature environment control module, humidity environment control module and light environment control module, wherein under the simulation of normal room temperature environment and humidity environment, conventional temperature settings are adopted, for example, 10°C to 40°C and humidity 20%-90%. If it is necessary to simulate frost and other situations, when the humidity is close to 100% and the temperature is controlled at below zero, the environment in the test chamber in a small space can simulate frost or even ice. It can also simulate high light intensity under frost or ice conditions, so as to realize the simulation of the environmental climate as much as possible.

[0012] Optionally, the degradation process monitoring unit includes multiple pairs of visual cameras, multiple pairs of fill lights, multiple pairs of anti-fog glass partitions and a chip-based shooting controller. The multiple pairs of visual cameras and the multiple pairs of fill lights are respectively installed in multiple visual shooting cavities, and the multiple pairs of anti-fog glass partitions are respectively installed in multiple visual shooting cavities to isolate moisture in the test cavity. The shooting controller controls the execution actions of the multiple pairs of visual cameras and the multiple pairs of fill lights respectively.

[0013] By adopting the above technical solution, the degradation process monitoring unit is mainly implemented based on a visual camera. The fill light can provide relatively uniform photographic light in a small test chamber. When shooting, the various components of the environmental simulation component can be temporarily turned off to avoid affecting the photographic results.

[0014] Optionally, the environmental simulation control module includes a control chip, an industrial control screen and a group of control buttons, wherein the industrial control screen and the group of control buttons are respectively mounted on the outer surface of the test equipment box, a group of control buttons are respectively communicated with the industrial control screen, the industrial control screen is communicated with the control chip, and the control chip is respectively communicated with the lifting mechanism, semiconductor temperature controller, humidity controller, lighting controller and shooting controller.

[0015] Optionally, an industrial touch control screen is used to replace the industrial control screen and a set of control buttons.

[0016] By adopting the above technical solution, the control of the industrial touch control screen can conveniently realize the control of various parameters and shooting, and the set program can be input to realize automatic test control.

[0017] Optionally, the environment simulation analysis module includes a memory and a computer, wherein the memory is communicatively connected to data output ends of multiple pairs of visual cameras respectively, and the computer is communicatively connected to the memory, and a visual analysis algorithm is used to analyze the visual images stored in the memory.

[0018] Optionally, the environmental simulation analysis module also includes a display, which is communicatively connected to the computer and is used to display visual images and visual analysis results.

[0019] The degradation test method for degradable materials based on environmental simulation uses a degradation test device for degradable materials based on environmental simulation to simultaneously perform environmental simulation tests on multiple degradable material test pieces, comprising the following steps:

[0020] Step 1, preparing a plurality of degradable material test pieces of the same size based on the size of the test cavity, and placing the degradable material test pieces on the upper surface of the spring column in the test slot on the top of the test piece carrying platform;

[0021] Step 2, operate the industrial touch control screen, output a descending command to the lifting mechanism through the control chip, and the piston rod of the lifting mechanism extends downward until the bottom of the test cover assembly is buckled on the top surface of the test piece carrying platform and then stops;

[0022] Step 3, setting environmental simulation parameters by operating the industrial touch control screen, and the control chip interactively controls the parameters to the semiconductor temperature controller, humidity controller and light controller respectively, and controls the actuators of the environmental simulation components to operate according to the set parameters, and simulates the environment in the test chamber;

[0023] Step 4: every set test time, the control chip controls the environmental simulation element to stop the action, and the shooting controller controls multiple pairs of visual cameras and multiple pairs of fill lights to turn on, and the multiple pairs of visual cameras respectively shoot visual images of the upper and lower surfaces of multiple pieces of biodegradable material test pieces in multiple test chambers, and the visual images are packaged according to the number data and the shooting time data and sent to the memory of the environmental simulation analysis module;

[0024] Step 5, the computer uses a visual analysis algorithm to analyze the visual image stored in the memory and outputs the visual analysis result;

[0025] Step 6: The display shows the visual image of the degradable material test piece corresponding to the serial number data and the visual analysis result.

[0026] Optionally, in step 5, the visual analysis algorithm includes the following steps:

[0027] Step a, preprocessing the image by standardizing cropping and noise reduction and enhancement;

[0028] Step b, extracting features associated with material degradation in the image, wherein the features associated with material degradation include color change, morphology change and texture change;

[0029] Step c, using a machine learning algorithm to determine the state of the material;

[0030] Step d, analyzing the changes of the material by comparing the images at different time points;

[0031] Step e: quantify the visual changes and output the analysis results.

[0032] In summary, the present invention includes at least one of the following beneficial technical effects:

[0033] The present invention can provide a degradation test device and method for degradable materials based on environmental simulation. In the same device, a test cover plate assembly that can be opened and closed driven by a lifting mechanism and a plurality of test slots of a test piece bearing platform are sealed and divided into a plurality of independent test chambers. A plurality of independent test chambers are equipped with separate environmental simulation elements. The environmental simulation elements can realize the simulation of temperature, humidity and light. The simulation parameters can be controlled by an environmental simulation control module, and can also be programmed to realize automatic simulation parameter setting. A plurality of visual cameras of a degradation process monitoring unit can independently shoot visual images of the test process of a plurality of degradable material test pieces. An environmental simulation analysis module can analyze the degradation process of the degradable material test piece based on environmental simulation parameters and visual images. The analysis adopts visual analysis, and mainly analyzes material degradation-related features including parameters such as color change, morphological change and texture change. Finally, a degradation test result based on environmental simulation is obtained through visual analysis. During the detection process, unless the staff learns that an abnormality occurs through visual images, the staff does not need to open the device for up to dozens of days. The degradation test of the degradable material can be completed more efficiently, and the test result can more accurately reflect various indicators of the degradable material. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the internal structure of the test state of the degradable material degradation test equipment based on environmental simulation of the present invention;

[0035] Figure 2 It is a schematic diagram of the internal structure of the degradable material degradation test equipment based on environmental simulation in a non-testing state of the present invention;

[0036] Figure 3 It is a structural schematic diagram of a degradation process monitoring unit of a degradation test device for degradable materials based on environmental simulation of the present invention installed inside a test cover assembly;

[0037] Figure 4 It is a schematic diagram of the connection principle of various electrical components of the degradable material degradation test equipment based on environmental simulation of the present invention;

[0038] Figure 5 It is a schematic diagram of visual picture effects of degradable material test pieces photographed at different test times by a degradation process monitoring unit of the degradable material degradation testing equipment based on environmental simulation of the present invention.

[0039] Explanation of reference numerals: 11, test piece carrying platform; 111, test chamber; 112, spring column; 12, lifting mechanism; 13, test cover assembly; 141, temperature environment control module; 1411, semiconductor temperature controller; 1412, heat conduction plate; 142, humidity environment control module; 1421, humidifying atomizer; 1422, moisture input pipeline; 1423, moisture output pipeline; 1424, micro circulation pump; 1425, humidity controller; 143, lighting environment Control module; 1431. Sunlight simulation lamp; 1432. Light controller; 2. Degradation process monitoring unit; 21. Visual camera; 22. Fill light; 23. Anti-fog glass partition; 24. Shooting controller; 3. Environmental simulation control module; 31. Control chip; 32. Industrial control screen; 33. Control button; 4. Environmental simulation analysis module; 41. Memory; 42. Computer; 43. Display; 100. Degradable material test piece; 101. Test equipment box. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0041] The embodiment of the present invention discloses a degradation testing device and method for degradable materials based on environmental simulation.

[0042] Reference Figure 1 - Figure 5Embodiment 1, a degradation test device for degradable materials based on environmental simulation, comprising an environmental simulator, a degradation process monitoring unit 2, a chip-based environmental simulation control module 3 and an environmental simulation analysis module 4, the environmental simulator comprising a test piece carrying platform 11, a lifting mechanism 12, a test cover assembly 13 and multiple sets of environmental simulation elements, the bottom of the test piece carrying platform 11 is detachably mounted in a test equipment box 101, a plurality of test slots are arranged on the top, the fixing seat of the lifting mechanism 12 is detachably mounted on the inner wall of the test equipment box 101, and the piston rod is downwardly facing the center of the test piece carrying platform 11, the upper part of the test cover assembly 13 is connected and mounted on the piston rod of the lifting mechanism 12, when the piston rod of the lifting mechanism 12 is in a descending state, the bottom of the test cover assembly 13 is buckled on the top surface of the test piece carrying platform 11, and the test piece The multiple test slots of the carrying platform 11 are sealed and divided into multiple independent test chambers 111. Multiple groups of environmental simulation elements are respectively installed on the inner walls of the multiple test chambers 111 to simulate the light and temperature and humidity environment. Multiple visual shooting chambers are arranged inside the test piece carrying platform 11 and the test cover assembly 13. Multiple visual cameras 21 of the degradation process monitoring unit 2 are respectively installed in the multiple visual shooting chambers to shoot the visual images of the test process of the degradable material test piece 100 and transmit them to the environmental simulation analysis module 4. The environmental simulation control module 3 controls the execution actions of each actuator of the environmental simulator and the degradation process monitoring unit 2 respectively. The environmental simulation analysis module 4 is respectively communicated with the degradation process monitoring unit 2 and the chip-based environmental simulation control module 3 to analyze the degradation process of the degradable material test piece 100 based on the environmental simulation parameters and the visual images.

[0043] In order to realize diversified environmental simulation tests on degradable materials, a test cover assembly 13 that can be opened and closed driven by a lifting mechanism 12 and multiple test slots of a test piece carrying platform 11 are sealed and divided into multiple independent test chambers 111 in the same device. The lifting mechanism 12 can be a lifting electric cylinder, a lifting cylinder, etc., and multiple independent test chambers 111 are equipped with separate environmental simulation elements. The environmental simulation elements can simulate temperature, humidity and light. The simulation parameters can be controlled by the environmental simulation control module 3, and can also be programmed to realize automatic simulation parameter setting. The multiple visual cameras 21 of the degradation process monitoring unit 2 can The visual images of the test process of multiple degradable material test pieces 100 are independently photographed. The environmental simulation analysis module 4 can analyze the degradation process of the degradable material test pieces 100 based on the environmental simulation parameters and the visual images. The analysis adopts visual analysis, and mainly analyzes the material degradation-related characteristics including parameters such as color change, morphological change and texture change. Finally, the degradation test results based on environmental simulation are obtained through visual analysis. During the detection process, unless the staff learns of abnormalities through visual images, they do not need to open the equipment for dozens of days, and can complete the degradation test of degradable materials more efficiently. The test results can better reflect the various indicators of degradable materials.

[0044] In Example 2, at least two spring columns 112 are provided in each test slot on the top of the test piece carrying platform 11, and the bottom surface of the test cover assembly 13 is provided with the same number of spring columns 112 at the position corresponding to each test slot of the test piece carrying platform 11. When the bottom of the test cover assembly 13 is buckled on the top surface of the test piece carrying platform 11, the spring columns press the degradable material test piece 100 into position.

[0045] At least two spring columns 112 are provided in each test slot on the top of the test piece carrying platform 11, and generally three spring columns 112 are used. The same number of spring columns 112 are provided at corresponding positions on the bottom surface of the test cover assembly 13. In this way, when the bottom of the test cover assembly 13 is buckled on the top surface of the test piece carrying platform 11, the three groups of spring columns will press the front, middle and rear parts of the upper and lower surfaces of the degradable material test piece 100, thereby adapting to the testing of hard or soft degradable materials of different sizes.

[0046] Embodiment 3, the environmental simulation element includes a temperature environment control module 141, a humidity environment control module 142 and a lighting environment control module 143, the temperature environment control module 141 includes a semiconductor temperature controller 1411 and a heat conducting plate 1412, the semiconductor refrigeration plate of the semiconductor temperature controller 1411 is installed at the electrical appliance slot opened at the bottom of the test cover assembly 13, one side of the heat conducting plate 1412 is attached to the surface of the semiconductor refrigeration plate, and the other side is in contact with the environment in the test cavity 111, and the control of the ambient temperature in the test cavity 111 is achieved by controlling the temperature parameters of the semiconductor temperature controller 1411, the humidity environment control module 142 includes a humidifying atomizer 1421, a moisture input pipe 1422, a moisture output pipe 1423, a micro-circulation pump 1424 and a humidity controller 1425 based on a humidity sensor, the humidifying atomizer 1421 is installed on the top of the test cover assembly 13, and the moisture output end of the humidifying atomizer 1421 is connected to the moisture input pipe 14 22 is connected to the test chamber 111, the moisture output pipe 1423 is buried in the test cover assembly 13, the micro-circulation pump 1424 is installed on the top of the test cover assembly 13, the suction port of the micro-circulation pump 1424 sucks moisture in the test chamber 111 through the moisture output pipe 1423, the humidity controller 1425 measures the humidity value in the test chamber 111 based on the set humidity value and the humidity sensor, and controls the execution actions of the humidifying atomizer 1421 and the micro-circulation pump 1424 respectively to control the humidity in the test chamber 111, the lighting environment control module 143 includes two sunlight simulation lamps 1431 and a lighting controller 1432, the two sunlight simulation lamps 1431 are respectively installed in the middle of the test slot of the test piece carrying platform 11 and the corresponding position at the bottom of the test cover assembly 13, and are used to irradiate the upper and lower surfaces of the degradable material test piece 100, and the lighting controller 1432 respectively controls the on, off and operating power of the two sunlight simulation lamps 1431.

[0047] In order to realize the environmental simulation of temperature, humidity and light, the environmental simulation element adopts the combination of temperature environment control module 141, humidity environment control module 142 and light environment control module 143, wherein under the simulation of normal room temperature and humidity environment, conventional temperature settings are adopted, for example, 10°C to 40°C and humidity 20%-90%. If it is necessary to simulate frost and other conditions, when the humidity is close to 100% and the temperature is controlled below zero, the environment in the small space test chamber 111 can simulate frost or even ice. It can also simulate high light intensity under frost or ice conditions, so as to realize the simulation of the environmental climate as much as possible.

[0048] In Example 4, the degradation process monitoring unit 2 includes multiple pairs of visual cameras 21, multiple pairs of fill lights 22, multiple pairs of anti-fog glass partitions 23 and a chip-based shooting controller 24. The multiple pairs of visual cameras 21 and the multiple pairs of fill lights 22 are respectively installed in multiple visual shooting cavities, and the multiple pairs of anti-fog glass partitions 23 are respectively installed in multiple visual shooting cavities to isolate moisture in the test cavity 111. The shooting controller 24 controls the execution actions of the multiple pairs of visual cameras 21 and the multiple pairs of fill lights 22 respectively.

[0049] The degradation process monitoring unit 2 is mainly implemented based on the visual camera 21. The fill light 22 can provide relatively uniform photographic light in the small space test chamber 111. When shooting, various components of the environmental simulation component can be temporarily turned off to avoid affecting the photographic results.

[0050] Embodiment 5, the environmental simulation control module 3 includes a control chip 31, an industrial control screen 32 and a group of control buttons 33, the industrial control screen 32 and a group of control buttons 33 are respectively installed on the outer surface of the test equipment box 101, a group of control buttons 33 are respectively communicated with the industrial control screen 32, the industrial control screen 32 is communicated with the control chip 31, and the control chip 31 is respectively communicated with the lifting mechanism 12, the semiconductor temperature controller 1411, the humidity controller 1425, the lighting controller 1432 and the shooting controller 24.

[0051] In Example 6, an industrial touch control screen is used to replace the industrial control screen 32 and a group of control buttons 33.

[0052] The industrial touch control screen can conveniently realize the control of various parameters and shooting, and can also input the set program to realize automatic test control.

[0053] Embodiment 7, the environment simulation analysis module 4 includes a memory 41 and a computer 42, the memory 41 is respectively connected to the data output ends of multiple pairs of visual cameras 21 for communication, the computer 42 is connected to the memory 41 for communication, and a visual analysis algorithm is used to analyze the visual images stored in the memory 41.

[0054] In Example 8, the environment simulation analysis module 4 further includes a display 43, which is communicatively connected to the computer 42 and is used to display visual images and visual analysis results.

[0055] Embodiment 9, a degradation test method for degradable materials based on environmental simulation, using a degradation test device for degradable materials based on environmental simulation to simultaneously perform environmental simulation tests on multiple degradable material test pieces 100, comprising the following steps:

[0056] Step 1, prepare a plurality of degradable material test pieces 100 of the same size based on the size of the test cavity 111, and place the degradable material test pieces 100 on the upper surface of the spring column 112 in the test slot on the top of the test piece carrying platform 11;

[0057] Step 2, operate the industrial touch control screen, output a descending command to the lifting mechanism 12 through the control chip 31, and the piston rod of the lifting mechanism 12 extends downward until the bottom of the test cover assembly 13 is buckled on the top surface of the test piece carrying platform 11 and then stops;

[0058] Step 3, by operating the industrial touch control screen to set the environmental simulation parameters, the control chip 31 interacts with the semiconductor temperature controller 1411, the humidity controller 1425 and the light controller 1432 to control the parameters, respectively, and controls the actuators of the environmental simulation components to operate according to the set parameters, and simulates the environment in the test chamber 111;

[0059] Step 4, every set test time, the control chip 31 controls the environmental simulation element to stop the action, and controls the multiple pairs of visual cameras 21 and the multiple pairs of fill lights 22 to turn on through the shooting controller 24, and the multiple pairs of visual cameras 21 respectively shoot visual images of the upper and lower surfaces of the multiple pieces of degradable material test pieces 100 in the multiple test chambers 111, and the visual images are packaged according to the number data and the shooting time data and sent to the memory 41 of the environmental simulation analysis module 4;

[0060] Step 5, the computer 42 uses a visual analysis algorithm to analyze the visual images stored in the memory 41 and outputs the visual analysis results;

[0061] Step 6: the display 43 displays the visual image of the degradable material test piece 100 corresponding to the serial number data and the visual analysis result.

[0062] In Example 10, in step 5, the visual analysis algorithm includes the following steps:

[0063] Step a, preprocessing the image by standardizing cropping and noise reduction and enhancement;

[0064] Step b, extracting features associated with material degradation in the image, wherein the features associated with material degradation include color change, morphology change and texture change;

[0065] Step c, using a machine learning algorithm to determine the state of the material;

[0066] Step d, analyzing the changes of the material by comparing the images at different time points;

[0067] Step e: quantify the visual changes and output the analysis results.

[0068] Below is a simplified example of how to use Python and the OpenCV library to analyze visual images of degradable materials under environmental simulation. This example assumes that you already have a sequence of images of material degradation captured at different time points, and we are only interested in the change in material area to assess the degree of degradation.

[0069] import cv2

[0070] import numpy as np

[0071] import os

[0072] # The folder contains a series of image files named in sequence

[0073] image_folder = 'path_to_images'

[0074] image_files = sorted([os.path.join(image_folder, f) for f inos.listdir(image_folder) if f.endswith('.jpg')])

[0075] # Initialize a list to store the area of ​​the material in each image

[0076] material_areas = []

[0077] # Iterate through all image files

[0078] for image_file in image_files:

[0079] # Read the image

[0080] image = cv2.imread(image_file)

[0081] # Convert to grayscale image

[0082] gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

[0083] # Apply threshold operation to segment material area (here assuming that the material color is bright)

[0084] _, thresh = cv2.threshold(gray, 128, 255, cv2.THRESH_BINARY)

[0085] # Find the outline of the material area

[0086] contours, _ = cv2.findContours(thresh, cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_SIMPLE)

[0087] # Assume there is only one contour corresponding to the material

[0088] if contours:

[0089] # Calculate the area of ​​the contour

[0090] area = cv2.contourArea(contours[0])

[0091] material_areas.append(area)

[0092] else:

[0093] material_areas.append(0)

[0094] # Output the area of ​​the material in each image

[0095] for i, area in enumerate(material_areas):

[0096] print(f"Image {i+1}: Material area = {area} pixels")

[0097] # You can further analyze the area change, such as calculating the percentage of area change

[0098] if len(material_areas) > 1:

[0099] initial_area = material_areas[0]

[0100] final_area = material_areas[-1]

[0101] degradation_percentage = ((initial_area - final_area) / initial_area) * 100

[0102] print(f"Material degradation percentage: {degradation_percentage:2f}%")

[0103] The output results are shown in Table 1: Table 1 Image number Material Area (Pixels) Rate of change relative to the previous image (%) image_01.jpg 50000 NaN image_02.jpg 48000 -4.0000 image_03.jpg 46000 -4.1667 image_04.jpg 44000 -4.3478 The first image has no percent change because there is no previous image to compare it to.

[0104] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Degradable material degradation test equipment based on environmental simulation, characterized by: The invention comprises an environmental simulator, a degradation process monitoring unit (2), a chip-based environmental simulation control module (3) and an environmental simulation analysis module (4); the environmental simulator comprises a test piece bearing platform (11), a lifting mechanism (12), a test cover assembly (13) and a plurality of sets of environmental simulation elements; the bottom of the test piece bearing platform (11) is detachably mounted in a test equipment box (101), and a plurality of test slots are arranged on the top; the fixing seat of the lifting mechanism (12) is detachably mounted on the inner wall of the test equipment box (101), and the piston rod faces downwardly directly to the center of the test piece bearing platform (11); the upper part of the test cover assembly (13) is connected and mounted on the piston rod of the lifting mechanism (12); when the piston rod of the lifting mechanism (12) is in a descending state, the bottom of the test cover assembly (13) is buckled on the top surface of the test piece bearing platform (11), so that the plurality of test slots on the test piece bearing platform (11) are The test tank is sealed and divided into a plurality of independent test chambers (111); a plurality of sets of environmental simulation elements are respectively mounted on the inner walls of the plurality of test chambers (111) for simulating light and temperature and humidity environments; a plurality of visual shooting chambers are provided inside the test piece bearing platform (11) and the test cover assembly (13); a plurality of visual cameras (21) of the degradation process monitoring unit (2) are respectively mounted in the plurality of visual shooting chambers to shoot visual images of the test process of the degradable material test piece (100) and transmit the images to the environmental simulation analysis module (4); the environmental simulation control module (3) controls the execution actions of the environmental simulator and the actuators of the degradation process monitoring unit (2); the environmental simulation analysis module (4) is respectively connected to the degradation process monitoring unit (2) and the chip-based environmental simulation control module (3) for analyzing the degradation process of the degradable material test piece (100) based on environmental simulation parameters and visual images.

2. The degradable material degradation testing device based on environmental simulation according to claim 1, characterized in that: At least two spring columns (112) are provided in each test slot on the top of the test piece bearing platform (11); the bottom surface of the test cover assembly (13) is provided with the same number of spring columns (112) at positions corresponding to each test slot on the test piece bearing platform (11); when the bottom of the test cover assembly (13) is buckled onto the top surface of the test piece bearing platform (11), the spring columns press the degradable material test piece (100) into position.

3. The degradation testing device for degradable materials based on environmental simulation according to claim 2, characterized in that: The environmental simulation element comprises a temperature environment control module (141), a humidity environment control module (142) and a light environment control module (143); the temperature environment control module (141) comprises a semiconductor temperature controller (1411) and a heat conduction plate (1412); the semiconductor cooling plate of the semiconductor temperature controller (1411) is installed at an electrical appliance slot provided at the bottom of the test cover assembly (13); one side of the heat conduction plate (1412) is attached to the surface of the semiconductor cooling plate, and the other side is in contact with the environment in the test cavity (111); The temperature parameter control of the temperature controller (1411) realizes the control of the ambient temperature in the test chamber (111). The humidity environment control module (142) comprises a humidifying atomizer (1421), a moisture input pipeline (1422), a moisture output pipeline (1423), a micro-circulation pump (1424) and a humidity controller (1425) based on a humidity sensor. The humidifying atomizer (1421) is installed on the top of the test cover assembly (13). The moisture output end of the humidifying atomizer (1421) is connected to the moisture input pipeline (1422). The test chamber (111) is connected to the test chamber (111), the moisture output pipe (1423) is buried in the test cover assembly (13), the micro-circulation pump (1424) is installed on the top of the test cover assembly (13), the suction port of the micro-circulation pump (1424) sucks moisture in the test chamber (111) through the moisture output pipe (1423), and the humidity controller (1425) controls the execution of the humidifying atomizer (1421) and the micro-circulation pump (1424) based on the set humidity value and the humidity value in the test chamber (111) measured by the humidity sensor. The light environment control module (143) is configured to realize the control of the humidity in the test chamber (111), the light environment control module (143) comprising two sunlight simulation lamps (1431) and a light controller (1432), the two sunlight simulation lamps (1431) being respectively mounted at the middle of the test slot of the test piece bearing platform (11) and at corresponding positions at the bottom of the test cover assembly (13), and being used to illuminate the upper and lower surfaces of the degradable material test piece (100), and the light controller (1432) respectively controlling the on / off and operating power of the two sunlight simulation lamps (1431).

4. The degradation testing device for degradable materials based on environmental simulation according to claim 3, characterized in that: The degradation process monitoring unit (2) comprises a plurality of pairs of visual cameras (21), a plurality of pairs of fill-in lights (22), a plurality of pairs of anti-fog glass partitions (23) and a chip-based shooting controller (24); the plurality of pairs of visual cameras (21) and the plurality of pairs of fill-in lights (22) are respectively installed in a plurality of visual shooting chambers; the plurality of pairs of anti-fog glass partitions (23) are respectively installed at a plurality of visual shooting chambers to isolate moisture in the test chamber (111); and the shooting controller (24) controls the execution actions of the plurality of pairs of visual cameras (21) and the plurality of pairs of fill-in lights (22).

5. The degradation testing device for degradable materials based on environmental simulation according to claim 4, characterized in that: The environment simulation control module (3) comprises a control chip (31), an industrial control screen (32) and a group of control buttons (33), wherein the industrial control screen (32) and the group of control buttons (33) are respectively mounted on the outer surface of the test equipment box (101), the group of control buttons (33) are respectively connected to the industrial control screen (32), the industrial control screen (32) is connected to the control chip (31), and the control chip (31) is respectively connected to the lifting mechanism (12), the semiconductor temperature controller (1411), the humidity controller (1425), the illumination controller (1432) and the shooting controller (24).

6. The degradation testing device for degradable materials based on environmental simulation according to claim 5, characterized in that: An industrial touch control screen is used to replace the industrial control screen (32) and a group of control buttons (33).

7. The degradation testing device for degradable materials based on environmental simulation according to claim 6, characterized in that: The environment simulation analysis module (4) comprises a memory (41) and a computer (42), wherein the memory (41) is respectively communicatively connected to the data output ends of the plurality of pairs of visual cameras (21), and the computer (42) is communicatively connected to the memory (41), and a visual analysis algorithm is used to analyze the visual images stored in the memory (41).

8. The degradation testing device for degradable materials based on environmental simulation according to claim 7, characterized in that: The environment simulation analysis module (4) further comprises a display (43), wherein the display (43) is communicatively connected to the computer (42) and is used to display visual images and visual analysis results.

9. A degradation test method for degradable materials based on environmental simulation, characterized in that: The degradable material degradation testing device based on environmental simulation as claimed in claim 8 is used to simultaneously perform environmental simulation tests on a plurality of degradable material test pieces (100), comprising the following steps: Step 1, preparing a plurality of degradable material test pieces (100) of the same size based on the size of the test cavity (111), and placing the degradable material test pieces (100) on the upper surface of the spring column (112) in the test slot on the top of the test piece carrying platform (11); Step 2, operating the industrial touch control screen to output a descending command to the lifting mechanism (12) through the control chip (31), and the piston rod of the lifting mechanism (12) extends downward until the bottom of the test cover assembly (13) is buckled on the top surface of the test piece bearing platform (11) and then stops; Step 3, setting environmental simulation parameters by operating the industrial touch control screen, the control chip (31) interactively controls the parameters to the semiconductor temperature controller (1411), the humidity controller (1425) and the illumination controller (1432), respectively, and controls the actuators of the environmental simulation elements to operate according to the set parameters, thereby simulating the environment in the test chamber (111); Step 4, every set test time, the control chip (31) controls the environmental simulation element to stop operating, and controls the plurality of pairs of visual cameras (21) and the plurality of pairs of fill lights (22) to turn on through the shooting controller (24), so that the plurality of pairs of visual cameras (21) respectively shoot visual images of the upper and lower surfaces of the plurality of degradable material test pieces (100) in the plurality of test chambers (111), and packages the visual images according to the number data and the shooting time data and sends them to the memory (41) of the environmental simulation analysis module (4); Step 5, the computer (42) uses a visual analysis algorithm to analyze the visual image stored in the memory (41) and outputs the visual analysis result; Step 6: The display (43) displays a visual image of the degradable material test piece (100) corresponding to the serial number data and a visual analysis result.

10. The method for testing degradation of degradable materials based on environmental simulation according to claim 9, characterized in that: In step 5, the visual analysis algorithm includes the following steps: Step a, preprocessing the image by standardizing cropping and noise reduction and enhancement; Step b, extracting features associated with material degradation in the image, wherein the features associated with material degradation include color change, morphology change and texture change; Step c, using a machine learning algorithm to determine the state of the material; Step d, analyzing the changes of the material by comparing the images at different time points; Step e: quantify the visual changes and output the analysis results.

Images